@font-face {
  font-family: 'OPPO Sans';
  src: url('../font/OPPO Sans 4.0.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}

* {
    margin: 0;
    padding: 0;
    font-family: 'OPPO Sans', sans-serif;
    box-sizing: border-box;
}

